Question

diff bw molality and molarity
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Answer 1

Answer:

Molality formula and units

The units of molality are m or mol/kg.

Molality equation

m = moles solute / kilograms solvent

Molarity formula and units

The units of molarity are M or mol/L. A 1 M solution is said to be “one molar.”

Molarity equation

M = moles solute / liters solution

Explanation:

Both molarity and molality are measures of a chemical solution's concentration. ... The molality describes the moles of a solute in relation to the mass of a solvent, while the molarity is concerned with the moles of a solute in relation to the volume of a solution.

Answer 2

Answer:

Molarity

Molality

Molarity of a given solution is defined as the total number of moles of solute per litre of solution.

Molality is defined as the total moles of a solute contained in a kilogram of a solvent.

Mathematical expression is M = number of moles of the solute /Volume of solution given in terms of litres.

Mathematical expression is

m = Numbers of moles of solute/Mass of solvent in kgs

m = (g ✕ 1000)/(W ✕ m).

Depends on volume of the whole solution.

Depends on the mass of the solvent.

Unit sign expressed as (M).

Unit sign expressed as (m).

Molarity has a unit of moles/liter.

Molality has units of moles/kg.